What is Mello Yello?
1.
The nectar of the Gods. Smoother than the Mt. Dew, better tasting than Vault. It has just the right amount of caffine, and it will make your penis bigger.
Girlfriend: WOW! Your penis looks bigger!
You: You bet! I've been drinking Mello Yello!
See
2.
Pretty much just an imitation of
Dude, Mello Yello? Wheres your MD?
See